"Bloomberg reports that Google is now "at its smallest share of the US web search market since at least 2008"—and more significantly, "the highest share for Yahoo since 2009." reported by Business Insider linked from this post at SEOChat http://www.seochat.com/c/a/search-engine-news/is-2016-the-year-bing-takes-on-google/

"there are rumours that Apple Safari, who currently use Google on their iPhone devices, might also be considering going with Yahoo, Bing or even their own in-house program. This would be a significant blow to Google, as reportedly more than half of mobile traffic in the USA comes from Safari, according to data collected in December 2014."